package com.psjj.privilege.web.filter;

import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 *
 */
public class EncodingFilter implements Filter {
    private static String ENCODING;
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        //读取初始化数据
        ENCODING = filterConfig.getInitParameter("encoding");
    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        //设置编码
        HttpServletRequest req = (HttpServletRequest)servletRequest;
        HttpServletResponse resp = (HttpServletResponse) servletResponse;
        req.setCharacterEncoding(ENCODING);
        //放行
        filterChain.doFilter(req,resp);
    }

    @Override
    public void destroy() {

    }
}
